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윤석찬(S.C.Yun),장진희(J.H.Jang),한창수(C.S.Han) 한국자동차공학회 1994 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Recently, the usage of the Motor Driven Power Steering(MDPS) system is in the trend of increase. The MDPS system assists the steering effort by an electric mo색, for small size passenger cars. In the hydraulic power steering, the power source is separated from the steering system. However MDPS system is equipped with the motor, which is directly coupled to the steering system. MDPS is strong in many aspects, such as low energy consumption. easy mounting in vehicles, and light weight, etc. The Bond Graph models are created for those two kinds of MDPS systems (pinion assist and rack assist type). Based on these models, dynamic characteristics will be analyzed for the preceding steps of the control unit design.<br/>
고속 주행시 횡가속도 제어를 위한 MDPS 시스템 개발에 관한 연구
박동진(T.J.Park),윤석찬(S.C.Yun),한창수(C.S.Han),이상곤(S.G. Lee),구상순(S.S.Goo),우덕현(D.H.Wuh) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.11_2
Power steering systems for automobiles are becoming more popular for reduceing steering efforts of the drivers, especially during parking lot maneuver. Though hydraulic power steering has widely usec for many years . the efficiency of hydraulic system is not high enough. The MDPS system can solve the problems associated with the hydraulic power steering system. In this study, the MDPS system with ball-screw mechanism is proposed by the bond graph modeling which has the motor, torque sensor, ball screw mechanism and so on. On the basis of the velocity boosting torque controller, the lateral acceleration controller is added. As well as the result, we can set constant frequency characteristics and enhance directional stability at high speed maneuver by controlling MDPS motor with proportional to steering wheel angular velocity.<br/>